This work presents a non‐isolated DC–DC boost converter employing coupled inductors, a diode‐capacitor network, and a voltage multiplier cell (VMC). This converter allows extending the conversion ratio not only by increasing the turns ratio of the coupled inductor, but also by adding more networks and VMCs, resulting in a more flexible design approach. Unlike most coupled‐inductor‐based boost‐type converters reported in the literature, the topology presents an output stage whose current is non‐pulsating, which leads to reduced electromagnetic interference (EMI) levels. Other prominent advantages include the fact that the input current is non‐pulsating with low high‐frequency ripple, as well as the operation of the switch and output diode under soft‐switching condition. Experimental results obtained from a 200‐W prototype are presented and discussed to validate the theoretical assumptions, also showing that the converter has high efficiency over a wide load range.

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to the utility. When the system generates less than it is Abstract-This paper presents a study and optimization of two required to support the demand, the energy is extracted from step-up DC-DC power converters operating with high efficiency the grid. The worst problem of this system, when applied to to be used in the first stage of grid-connected photovoltaic Brazil, is the absence of a policy that rules energy sales, systems. The first studied power structures was the DC-DC generated from small and medium producers to the local Half-Bridge Zero Voltage Switching Pulse Width Modulation geneate ofro smalland u u t (DC-DC HB ZVS-PWM) asymmetrically driven converter and utility of electrical energy. the second was the Full Bridge Zero Voltage Switching Phase Thus, with many pos and cons related to the use of Shift (DC-DC FB ZVS-PWM) converter.The efforts in the photovoltaic systems, the determination of the best way to study of the structures used in the first stage were focused in apply photovoltaic panels to generate energy in Brazil is characteristics like high efficiency, galvanic isolation, beyond the costs involved on its installation. robustness and facility to control.This way, the following project presents better power structure to be used in the first stage of a grid-connected I.